NK21/20A Needle Roller Bearing 21x29x20mm - Machined TypeNK21 20A Needle Roller Bearing Without Inner Ring 21mm x 29mm x 20mm VXB Bearing NK21 20A Needle Roller Bearing Without Inner Ring 21x29x20mm Machined type needle roller bearing NK21 20A without inner ring. The inner diameter is 21mm, the outer diameter is 29mm, width is 20mm. NK21 20A Bearing Needle Roller Bearing Dimensions: 21mm x 29mm x 20mm Metric Size: 21mm x 29mm x 20mm Quantity: 1 Bearing Brand: VXB Bearing